The image is based on Gaceta de Banderas 15, "Simbolos
Patrios" Gobernación de Caldas, Secretaríade Educación
Departamental.Dirk Schonberger, 18 July 2002

I must stress that this source is a poor indicator of the
actual proportions of the municipal flags. Some flags are just
annexed to the Coat of Arms in a square proportion. Two of these
flags were presented previously in a 2:1 proportion. Many
of these flags could be such. I think it will be wise to
place a note that indicates that the true proportions of these
flags could be 2:1 also.Blas Delgado Ortiz, 27 July 2002

INSTITUTO CULTURAL RIOSUCIO - The Institute was founded in
November 1966 by Decree #148. It is located in the Municipality
of Riosucio, in the western part of the departemnt of Caldas.
The flag is made of three horizontal stripes yellow-gold, black
and red with an equal basis [i.e. with an esual width along the
hoist], the black stripe ending in a point. Yellow means wealth,
black science and wisdom, and red love.
Source: <inscul.tripod.com.co/bandera.htm>.Ivan Sache and Dov Gutterman, 19 August 2002

Considering that "Riosucio" (or rather "río
sucio") means "dirty river" I may wonder that the
black triangle may stand also for something else...Anto'nio Martins, 22 August 2002